1 files changed, 16 insertions, 0 deletions

diff --git a/arch/alpha/kernel/pci.c b/arch/alpha/kernel/pci.c
index 1f36bbd0ed5d..2a8b364c822e 100644
--- a/arch/alpha/kernel/pci.c
+++ b/arch/alpha/kernel/pci.c
@@ -350,8 +350,24 @@ pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
         region->end = res->end - offset;
 }
 
+void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
+                             struct pci_bus_region *region)
+{
+        struct pci_controller *hose = (struct pci_controller *)dev->sysdata;
+        unsigned long offset = 0;
+
+        if (res->flags & IORESOURCE_IO)
+                offset = hose->io_space->start;
+        else if (res->flags & IORESOURCE_MEM)
+                offset = hose->mem_space->start;
+
+        res->start = region->start + offset;
+        res->end = region->end + offset;
+}
+
 #ifdef CONFIG_HOTPLUG
 EXPORT_SYMBOL(pcibios_resource_to_bus);
+EXPORT_SYMBOL(pcibios_bus_to_resource);
 #endif
 
 int